JP7529231B2 - Base station, terminal, communication system, and communication method - Google Patents

Description

The present invention relates to a base station device and a user device in a wireless communication system.

The 3rd Generation Partnership Project (3GPP) is currently studying a wireless communication method known as 5G or New Radio (NR) (hereinafter, this wireless communication method will be referred to as "NR") in order to achieve even larger system capacity, even higher data transmission speeds, and even lower latency in wireless sections.

In addition, 3GPP is also considering extending IoT technologies based on LTE. For example, WUS (Wake-up signal) has been introduced in LTE-IoT Rel. 15 for the purpose of power saving of IoT-UE (NB-IoT/eMTC) (see, for example, Non-Patent Document 1).

3GPP TS 36.211 V15.4.0 (2018-12)

In Rel. 16, the introduction of a WUS that applies to individual groups of UEs and a WUS that applies commonly to multiple groups is being considered. However, if a UE monitors both a WUS that applies to an individual group and a WUS that applies commonly to multiple groups, the power saving effect may be reduced. In other words, it may not be appropriate for a UE to monitor both of the above wake-up signals.

The present invention has been made in consideration of at least the above points, and aims to provide a technique that enables a user device to properly monitor an activation signal in a wireless communication network in which an activation signal applied to an individual group and an activation signal applied commonly to multiple groups are transmitted.

According to the disclosed technology , a control unit sets setting information regarding group wake-up signals grouped for each group of the terminals and a common wake-up signal common to a plurality of the groups, the group being wake-up signals to be transmitted to the terminals as a trigger for monitoring paging occasions;
A transmission unit that transmits the configuration information to the terminal by RRC signaling;
having
The transmission unit is provided with a base station that transmits the common wake-up signal to the terminal using resources for transmitting the wake-up signal .

According to the disclosed technology, a technology is provided that enables a user device to properly monitor an activation signal in a wireless communication network in which an activation signal that is applied to an individual group and an activation signal that is commonly applied to multiple groups are transmitted.

1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention. 1 is a diagram for explaining WUS of Rel. 1 is a diagram for explaining WUS of Rel. FIG. 13 is a diagram illustrating an example of resource allocation for a WUS. FIG. 13 is a diagram illustrating an example of resource allocation for a WUS. FIG. 13 is a diagram illustrating an example of resource allocation for a WUS. FIG. 13 is a diagram illustrating an example of resource allocation for a WUS. FIG. 13 is a diagram illustrating an example of resource allocation for a WUS. FIG. 13 is a diagram illustrating an example of resource allocation for a WUS. FIG. 13 is a diagram illustrating an example of resource allocation for a WUS. FIG. 13 is a diagram illustrating an example of resource allocation for a WUS. FIG. 13 is a diagram illustrating an example of resource allocation for a WUS. FIG. 11 is a diagram showing an example of a sequence for WUS monitoring of the user device 20. FIG. 1 is a diagram for explaining a problem. FIG. 11 is a diagram showing an example of a sequence of instructions for enabling/disabling a group common WUS. FIG. 13 is a diagram showing an example in which the number of UE group IDs is small. FIG. 13 is a diagram showing an example in which the number of UE group IDs is large. FIG. 13 is a diagram showing an example of placing a group common WUS in multiple WUS resources. FIG. 13 is a diagram showing an example of placing a group common WUS in one WUS resource. FIG. 2 is a diagram illustrating an example of a functional configuration of a base station device 10 according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an example of a functional configuration of a user device 20 according to an embodiment of the present invention. 2 is a diagram illustrating an example of a hardware configuration of a base station device 10 or a user device 20 according to an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below is an example, and the embodiment to which the present invention is applicable is not limited to the following embodiment.

In addition, this specification uses terms used in existing NR or LTE specifications, such as PDCCH and RRC, but the channel names, protocol names, signal names, function names, etc. used in this specification may be called by different names.

In addition, the following description mainly focuses on LTE Rel. 15 and LTE Rel. 16, but the present invention is not limited to LTE and can be applied to other wireless systems including NR.

(System configuration)
Fig. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention. As shown in Fig. 1, the wireless communication system according to the embodiment of the present invention includes a base station device 10 and a user device 20. Although Fig. 1 shows one base station device 10 and one user device 20, this is an example, and there may be a plurality of each.

The base station device 10 is a communication device that provides one or more cells and performs wireless communication with the user device 20. The physical resources of the wireless signal are defined in the time domain and the frequency domain, and the time domain may be defined by the number of OFDM symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks. In addition, the TTI (Transmission Time Interval) in the time domain may be a slot, or the TTI may be a subframe.

The base station device 10 transmits a synchronization signal and system information to the user device 20. The synchronization signal is, for example, PSS and SSS. The system information is, for example, transmitted on the PBCH or PDSCH, and is also called broadcast information. As shown in FIG. 1, the base station device 10 transmits a control signal or data to the user device 20 on the DL (Downlink), and receives a control signal or data from the user device 20 on the UL (Uplink). Note that, here, what is transmitted on a control channel such as PUCCH or PDCCH is called a control signal, and what is transmitted on a shared channel such as PUSCH or PDSCH is called data, but these names are merely examples.

The user device 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable device, or a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the user device 20 receives control signals or data from the base station device 10 in DL and transmits control signals or data to the base station device 10 in UL, thereby using various communication services provided by the wireless communication system. The user device 20 may be called a UE, and the base station device 10 may be called an eNB (or gNB).

As described above, the user equipment 20 can be various types of terminals, but in this embodiment, the user equipment 20 is mainly assumed to be an IoT-UE of LTE Rel. 16 (or a release after Rel. 16). However, the user equipment 20 is not limited to an IoT-UE of LTE Rel. 16 (or a release after Rel. 16). In addition, the assumed IoT-UE may be an NB-IoT UE or an eMTC UE.

(About WUS)
In the wireless communication system according to the present embodiment, the base station device 10 transmits a WUS, and the user device 20 monitors the WUS. First, the WUS will be described.

Before WUS was introduced, the user equipment 20 in the idle state monitors the periodically arriving PO (Paging Occasion) every time. Note that monitoring the PO can also be rephrased as monitoring the paging PDCCH or monitoring the paging search space.

In monitoring the PO, the user device 20 demodulates the DCI transmitted on the PDCCH and checks whether the DCI is addressed to the user device 20. Therefore, regardless of whether the DCI is addressed to the user device 20, the user device 20 must perform a demodulation operation for each PO, which is likely to result in unnecessary power consumption. In particular, when the paging PDCCH is repeatedly transmitted, the DCI must also be repeatedly demodulated, which is likely to result in unnecessary power consumption.

Therefore, WUS was introduced in Rel. 15_LTE-IoT. WUS in Rel. 15_LTE-IoT (WUS defined in the LTE Rel. 15 specifications) is associated one-to-one with PO. The resource from which WUS is transmitted is calculated, for example, from the UE-ID (IMSI, etc.). One bit in the WUS notifies the user equipment 20 that paging is being sent. The WUS sequence is calculated, for example, from the cell ID, the time position of the PO, etc., as described in Non-Patent Document 1 (10.2.6B.1).

The user device 20 monitors the WUS using the WUS resource, and when it detects a WUS (such as a sequence specified by the WUS parameters notified in the system information), it knows that there may be a paging addressed to itself, and monitors the paging PDCCH in the PO. In other words, the WUS is a wake-up signal that triggers monitoring of paging opportunities.

An example of operation related to WUS in Rel. 15_LTE-IoT will be described with reference to Figures 2 and 3. Figure 2 shows an example of a case where paging PDCCH is not repeatedly transmitted. As shown in Figure 2, when the user equipment 20 detects WUS, the user equipment 20 monitors the paging PDCCH, and when it receives DCI addressed to itself, it reads the paging message.

Figure 3 shows an example of a case where a paging PDCCH is repeatedly transmitted. When the user equipment 20 detects a WUS, the user equipment 20 repeatedly monitors the paging PDCCH.

In Rel. 15, WUS is associated with PO on a one-to-one basis. On the other hand, PO is common to multiple user equipment. Therefore, all user equipment in idle state that detects WUS wakes up and monitors paging PDCCH. In other words, there is a possibility that many user equipment that is not the destination of paging will wake up.

Therefore, in this embodiment related to LTE Rel. 16, user devices are grouped based on UE-ID, etc. In other words, basically, user devices belonging to a certain group monitor only the WUS of that group. This makes it possible to reduce the number of user devices that start up even though they are not paging destinations.

A group is identified by a UE group ID. User equipment that supports Rel. 16_WUS also supports Rel. 15 WUS.

In the following, the Rel. 16 WUS will be referred to as the Rel. 16_WUS, and the Rel. 15 WUS will be referred to as the legacy WUS. In addition, when there is no particular distinction between the two, they will be referred to as WUS. The legacy WUS may also be called the legacy startup signal.

The UE group ID is also used to generate sequences for Rel. 16_WUS. The number of UE groups can be set from the base station device 10 to the user device 20, and is broadcast from the base station device 10, for example, by SIB.

Multiplexing of Rel. 16_WUS and legacy WUS can be performed, for example, in any of the following ways: TDM, FDM, single sequence CDM, single sequence CDM+TDM, single sequence CDM+FDM.

In addition, multiplexing between multiple WUSs can be performed, for example, in any of the following ways: single sequence CDM, FDM, single sequence CDM+TDM, single sequence CDM+FDM.

Single sequence CDM is a technique in which, for example, a base WUS sequence is multiplied by an orthogonal code, i.e., a code with zero or small cross-correlation, to generate multiple WUS sequences, and one of the generated WUS sequences is selected and transmitted.

(WUS Resource Allocation)
In this embodiment, a method of allocating WUS resources (time/frequency resources), which are resources used when the base station device 10 transmits a WUS to the user device 20 (resources with which the user device 20 monitors the WUS), will be described.

In this embodiment, a maximum of two WUS resources are configured in each of the time domain and the frequency domain. Here, "configuration" may mean that each WUS resource is configured from the base station device 10 to the user device 20, or that the base station device 10 determines each WUS resource. In the latter case, the user device 20 will only know the WUS resources for which it will monitor WUS, using a method described below.

In addition, multiple WUSs are multiplexed within a single WUS resource by using CDM (e.g., single sequence CDM).

Figures 4 to 6 show examples where multiple orthogonal WUS resources are configured. In each figure, the vertical axis represents frequency and the horizontal axis represents time. Note that "orthogonal" means that the resources do not overlap.

Figure 4 shows an example where two WUS resources are configured in the time direction. Figure 5 shows an example where two WUS resources are configured in the frequency direction. Figure 6 shows an example where four WUS resources are configured.

7 to 12 show examples of cases where Rel. 16_WUS or legacy WUS is transmitted from the base station device 10 using the above-mentioned WUS resources. Note that although each of Figs. 7 to 12 shows a case where a legacy WUS is included, it is also possible that a legacy WUS does not exist.

Figure 7 shows an example in which WUS resource A and WUS resource B are arranged in the time direction. As shown in Figure 7, multiple Rel. 16_WUSs multiplexed with CDM are transmitted in WUS resource A, and legacy WUSs are transmitted in WUS resource B.

Figure 8 shows an example in which WUS resource C and WUS resource D are arranged in the frequency direction. As shown in Figure 8, a legacy WUS is transmitted using WUS resource C, and multiple Rel. 16_WUS multiplexed using CDM are transmitted using WUS resource D.

Figure 9 shows an example in which WUS resource E, WUS resource F, WUS resource G, and WUS resource H are arranged in the time and frequency directions. As shown in Figure 9, Rel. 16_WUS is transmitted using WUS resources E and G, and legacy WUS is transmitted using WUS resource F.

10 shows another example in which WUS resource E, WUS resource F, WUS resource G, and WUS resource H are arranged in the time and frequency directions. As shown in FIG. 10, multiple Rel. 16_WUS multiplexed by CDM are transmitted in each of WUS resources E, G, and H, and a legacy WUS is transmitted in WUS resource F.

Figure 11 shows another example in which WUS resource A and WUS resource B are arranged in the time direction. As shown in Figure 11, multiple Rel. 16_WUSs multiplexed with CDM are transmitted in WUS resource A, and multiple Rel. 16_WUSs and legacy WUSs multiplexed with CDM are transmitted in WUS resource B.

Figure 12 shows another example in which WUS resource C and WUS resource D are arranged in the frequency direction. As shown in Figure 12, multiple Rel. 16_WUS and legacy WUS multiplexed with CDM are transmitted in WUS resource C, and multiple Rel. 16_WUS multiplexed with CDM are transmitted in WUS resource D.

(Example of WUS detection procedure)
For power saving, in this embodiment, in principle, the user device 20 monitors a WUS (one or multiple WUS) using only one WUS resource. For example, as shown in FIG. 10, even if a WUS can be transmitted from the base station device 10 using multiple WUS resources, the user device 20 monitors only one WUS resource corresponding to its own UE group ID among the multiple WUS resources.

Figure 13 shows an example of a processing sequence when a user device 20 monitors WUS resources.

In S101, the base station device 10 transmits configuration information, and the user device 20 receives the configuration information. The configuration information includes a UE group ID that is set in the user device 20. The configuration information may also include gap information (time) between the WUS and the PO. As will be described later, the configuration information may also include information indicating the number of UE groups and whether or not to monitor a common WUS for multiple groups.

The above configuration information may be transmitted by RRC signaling, by MAC CE, by DCI, or by any other method.

In S102, the user device 20 determines the time/frequency position of the WUS resource to be monitored based on the UE group ID set in S101. For example, when the size (frequency direction length and time direction length) of one WUS resource is predetermined, and further, an equation for calculating the time/frequency position of the WUS resource from the UE group ID is predetermined, the user device 20 can calculate the time/frequency position of the WUS resource from the UE group ID using the equation, and determine to monitor the WUS resource of the predetermined size at that position.

In addition, for example, when the time/frequency positions of WUS resources corresponding to each of multiple UE group IDs are predetermined by a table or the like (when user equipment 20 holds the table), user equipment 20 can determine the time/frequency positions of WUS resources corresponding to its own UE group ID from the table.

In step S103, the user device 20 monitors the WUS using the WUS resources determined in S102. The WUS series is also associated with the UE group ID. In monitoring the WUS, the user device 20 searches for a WUS series that corresponds to its own UE group ID.

(Regarding the Group-wide WUS)
In this embodiment, in addition to the group-specific WUS, the Rel.16_WUS can use a group common WUS that can activate all user equipment in a cell that supports WUS, and a multiple group WUS that can activate user equipment in multiple groups, but not all of them.

In addition, a group-common WUS that can start all user devices and a multiple-group WUS that can start user devices of multiple groups, but not all of them, may be collectively referred to as a "WUS common to multiple groups."

When group-common WUS/multiple group WUS is used, the user device 20 needs to monitor the group-common WUS/multiple group WUS in addition to monitoring the group-specific Rel. 16_WUS corresponding to the group to which the user device 20 belongs. "Group-common WUS/multiple group WUS" means group-common WUS, or multiple group WUS, or both group-common WUS and multiple group WUS.

For example, assume that the correspondence between WUS ID (WUS series ID) and UE group ID is set as shown in Figure 14(b), and WUS #1 to #4 are transmitted using WUS resource A and legacy WUS is transmitted using WUS resource B as shown in Figure 14(a). As shown in Figure 14(b), WUS #4 is a group-common WUS, and WUS #1 to #3 are group-specific WUS.

For example, if a user equipment 20 in an idle state belongs to a group with UE group ID #1, the user equipment 20 monitors WUS #1 corresponding to UE group ID #1 with WUS resource A corresponding to UE group ID #1, and also monitors WUS #4 common to the group with WUS resource A. If the user equipment 20 detects WUS #1 or WUS #4, the user equipment 20 wakes up and monitors the corresponding PO.

However, monitoring the group-common WUS in addition to the group-specific WUS may result in a reduction in the power saving effect. This is especially likely to occur when the traffic load is low.

(Example 1: Enabling/Disabling Group Common WUS/Multiple Group WUS)
A technique for solving the problem that monitoring a group-common WUS/multiple group WUS in addition to a group-specific WUS may result in a decrease in the power saving effect will be described as a first embodiment.

In the first embodiment, the user equipment 20 can disable or enable monitoring of the group common WUS/multiple group WUS by system information (e.g., SIB1-BR, other system information) or higher layer signaling (e.g., RRC signaling, MAC CE, etc.). Note that SIB1 is an abbreviation for SystemInformationBlockType1, and BR is an abbreviation for Bandwidth-Reduced.

An example of operation in the first embodiment will be described with reference to Fig. 15. Fig. 15 shows an example of control related to group common WUS. In S201, the base station device 10 instructs the user device 20 to enable or disable the group common WUS by system information or higher layer signaling.

In S202, the user device 20 determines the WUS monitoring method according to the instruction received in S201. For example, if an instruction is received to disable the group-common WUS, the user device 20 determines to monitor only the group-specific WUS and not to monitor the group-common WUS. In S203, the user device 20 performs WUS monitoring using the method determined in S202.

The setting in S201 may be performed together with the setting in S101 in FIG. 13 (setting of UE group ID, etc.), or may be performed separately from the setting in S101 in FIG. 13.

In addition, in S201, in addition to the above-mentioned enable/disable instruction, information such as the number and location of WUS resources may be sent.

Also, as shown in FIG. 15, instead of explicitly instructing the enabling/disabling of group common WUS/multiple group WUS, the user device 20 may autonomously determine whether to enable/disable group common WUS/multiple group WUS.

For example, the base station device 10 notifies the user device 20 of the number of UE group IDs (number of UE groups) used in the cell in which the user device 20 is located by system information or upper layer signaling. The user device 20 determines whether to enable/disable the group-common WUS/multiple group WUS based on the number of UE group IDs. Note that the "number of UE group IDs" is an example of information that indirectly indicates whether to monitor the group-common WUS/multiple group WUS. In this embodiment, an example is shown in which the "number of UE group IDs" is used to determine whether to enable/disable the group-common WUS/multiple group WUS, but the enable/disable of the group-common WUS/multiple group WUS may be determined based on "information that indirectly indicates whether to monitor the group-common WUS/multiple group WUS" other than the "number of UE group IDs".

Below, examples 1 to 3 are explained as examples of judgment based on the "number of UE group IDs".

Example 1: When the number of UE group IDs is small (e.g., 4), disable both group common WUS and multiple group WUS.

Example 2: When the number of UE group IDs is large (for example, 8), of group common WUS and multiple group WUS, only group common WUS is enabled and multiple group WUS is disabled.

Example 3: When the number of UE group IDs is very large (e.g. 16), enable both group common WUS and multiple group WUS.

When the number of UE group IDs is small, there is little benefit to using group common WUS or multiple group WUS, so as in Example 1, power saving is prioritized and both group common WUS and multiple group WUS are disabled.

On the other hand, when the number of UE group IDs is very large, as in Example 3, there are significant benefits to using both group common WUS and multiple group WUS, so it is decided to enable both group common WUS and multiple group WUS, as in Example 3.

Note that examples 1 to 3 are merely examples, and a judgment other than examples 1 to 3 may be made. Also, the base station device 10 may make a judgment based on the number of UE group IDs as in examples 1 to 3. The base station device 10 may use the result of the judgment based on the number of UE group IDs in the instruction to the user device 20 (the instruction at S201).

Figure 16 shows example 1, where the number of UE group IDs is small, and Figure 17 shows example 2, where the number of UE group IDs is large.

In addition, in the determination of "the number of UE group IDs is small" in the above example 1, a threshold may be used, and if the number of UE group IDs is equal to or less than the threshold, it may be determined that "the number of UE group IDs is small." In the determination of "the number of UE group IDs is large" in the above example 2, a threshold may be used, and if the number of UE group IDs is equal to or more than the threshold, it may be determined that "the number of UE group IDs is large." A threshold may be used in the same way for example 3.

In addition, the determination methods described in Examples 1 to 3 may be set from the base station device 10 to the user equipment 20 via system information or higher layer signaling, or the determination methods described in Examples 1 to 3 may be described in a specification, and the user equipment 20/base station device 10 may operate in accordance with the description in the specification.

In a wireless communication network in which wake-up signals that apply to individual groups and wake-up signals that apply commonly to multiple groups are transmitted, it becomes possible for user devices to properly monitor the wake-up signals.

Example 2
Next, a description will be given of Example 2. As described above, even when a plurality of WUS resources are set, the user device 20 monitors WUS in only one WUS resource.

Here, for example, consider a case where WUS resource A and WUS resource B are used, and a user device belonging to UE group ID #1 monitors the WUS of WUS resource A, and a user device belonging to UE group ID #2 monitors the WUS of WUS resource B.

In this case, if the base station device 10 transmits a group-common WUS intended to wake up all user devices in the cell using only WUS resource A, a user device monitoring WUS resource B will not monitor the group-common WUS and will not be able to detect the group-common WUS.

Therefore, in this embodiment, when multiple WUS resources are configured and a Rel. 16_WUS is transmitted using each WUS resource, the base station device 10 may transmit a group-common WUS using each WUS resource.

An example is shown in Figure 18. In the example of Figure 18, WUS resource G transmits Rel. 16_WUS corresponding to UE group IDs #1 to #3, and WUS resource E transmits Rel. 16_WUS corresponding to UE group IDs #4 to #6. Therefore, a group-common WUS is transmitted by both WUS resource G and WUS resource E.

The above method allows all user devices to properly monitor the group common WUS. However, transmitting group common WUSs, which are signals with the same purpose, using multiple WUS resources is not desirable as it puts strain on radio resources. It is desirable to minimize the number of group common WUSs to be transmitted.

Therefore, in the second embodiment, the legacy WUS may be used as a group-common WUS. In other words, the legacy WUS series may be used as one of the group-common WUS series.

An example is shown in Figure 19. In the example of Figure 19, WUS resource A transmits Rel. 16_WUS and group common WUS corresponding to UE group IDs #1 to #3, and WUS resource B transmits Rel. 16_WUS and legacy WUS corresponding to UE group IDs #4 to #6. When monitoring WUS resource B, a user device 20 that supports Rel. 16_WUS monitors this legacy WUS as a group common WUS. This eliminates the need to transmit a group common WUS in WUS resource B, and allows the legacy WUS to be used as a group common WUS, thereby enabling effective use of wireless resources.

For example, if the base station device 10 decides to send a group common WUS to wake up all user devices, the base station device 10 sends the group common WUS on WUS resource A and sends a legacy WUS on WUS resource B.

If the user equipment 20 belongs to a group with UE group ID #1, the user equipment 20 monitors the WUS with WUS_ID #1 transmitted on WUS resource A and monitors the group-common WUS with WUS_ID #4 transmitted on WUS resource A. If the user equipment 20 detects a group-common WUS, it monitors the PO.

Also, when the user equipment 20 belongs to the group with UE group ID #4, the user equipment 20 monitors the WUS with WUS_ID #5 transmitted on WUS resource B and monitors the legacy WUS with WUS_ID #8 transmitted on WUS resource B. If the user equipment 20 detects a legacy WUS, it monitors the PO.

Note that legacy WUS (legacy activation signal) is an example of a third activation signal transmitted using a resource other than the resource used to transmit "group common WUS/multiple group WUS" (second activation signal). A signal other than legacy WUS may be used as the third activation signal. Furthermore, the third activation signal may be "group common WUS/multiple group WUS".

In Example 2 as well, in a wireless communication network in which wake-up signals that are applied to individual groups and wake-up signals that are commonly applied to multiple groups are transmitted, a user device can appropriately monitor the wake-up signals.

(Device configuration)
Next, a functional configuration example of the base station device 10 and the user device 20 that execute the processes and operations described above will be described. The base station device 10 and the user device 20 include functions to implement the above-mentioned embodiments 1 and 2. However, the base station device 10 and the user device 20 may each have only the functions of any one of the embodiments 1 and 2 with respect to the embodiments 1 and 2.

<Base station device 10>
Fig. 20 is a diagram showing an example of the functional configuration of the base station device 10. As shown in Fig. 20, the base station device 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in Fig. 20 is merely an example. As long as the operation related to the embodiment of the present invention can be executed, the names of the functional divisions and functional units may be any names.

The transmitting unit 110 has a function of generating a signal to be transmitted to the user device 20 and transmitting the signal wirelessly. The receiving unit 120 has a function of receiving various signals transmitted from the user device 20 and acquiring, for example, information of a higher layer from the received signal.

The setting unit 130 stores preset setting information and various setting information to be transmitted to the user device 20 in a storage device, and reads it out from the storage device as necessary. The control unit 140 decides whether or not to cause the user device to monitor a WUS common to multiple user devices, for example, based on the number of groups of user devices. Note that the functional unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and the functional unit related to signal reception in the control unit 140 may be included in the receiving unit 120.

<User device 20>
Fig. 21 is a diagram showing an example of the functional configuration of the user device 20. As shown in Fig. 21, the user device 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in Fig. 21 is merely an example. As long as the operation related to the embodiment of the present invention can be executed, the names of the functional divisions and the functional units may be any names.

The transmitter 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly. The receiver 220 receives various signals wirelessly and obtains higher layer signals from the received physical layer signals.

The setting unit 230 stores various setting information received from the base station device 10 by the receiving unit 220 in a storage device, and reads it out from the storage device as necessary. The setting unit 230 also stores setting information that is set in advance. The control unit 240 executes various types of control. Note that the functional unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and the functional unit related to signal reception in the control unit 240 may be included in the receiving unit 220.

(Hardware configuration)
The block diagrams (FIGS. 20 and 21) used in the description of the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. The method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically coupled, or may be realized using two or more devices that are physically or logically separated and directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional blocks may be realized by combining the one device or the multiple devices with software.

Functions include, but are not limited to, judgement, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, regard, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs the transmission function is called a transmitting unit or transmitter. In either case, as mentioned above, there are no particular limitations on the method of implementation.

For example, the base station device 10, user device 20, etc. in one embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 22 is a diagram showing an example of the hardware configuration of the base station device 10 and user device 20 in one embodiment of the present disclosure. The above-mentioned base station device 10 and user device 20 may be physically configured as a computer device including a processor 1001, a memory device 1002, an auxiliary memory device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

In the following description, the term "apparatus" may be interpreted as a circuit, device, unit, etc. The hardware configuration of the base station apparatus 10 and the user equipment 20 may be configured to include one or more of the apparatuses shown in the figure, or may be configured to exclude some of the apparatuses.

Each function in the base station device 10 and the user device 20 is realized by loading a specific software (program) onto hardware such as the processor 1001, the memory device 1002, etc., so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls at least one of the reading and writing of data in the memory device 1002 and the auxiliary memory device 1003.

The processor 1001, for example, operates an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, the above-mentioned control unit 140, control unit 240, etc. may be realized by the processor 1001.

The processor 1001 reads out a program (program code), a software module, or data, etc., from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes according to the program. As the program, a program that causes a computer to execute at least a part of the operations described in the above-mentioned embodiment is used. For example, the control unit 140 of the base station device 10 shown in FIG. 20 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. Also, for example, the control unit 240 of the user device 20 shown in FIG. 21 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. Although the above-mentioned various processes have been described as being executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The program may be transmitted from a network via a telecommunication line.

The storage device 1002 is a computer-readable recording medium, and may be composed of at least one of, for example, a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), a RAM (Random Access Memory), etc. The storage device 1002 may also be called a register, a cache, a main memory, etc. The storage device 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method according to one embodiment of the present disclosure.

The auxiliary storage device 1003 is a computer-readable recording medium, and may be, for example, at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc. The auxiliary storage device 1003 may also be referred to as an auxiliary storage device. The above-mentioned storage medium may be, for example, a database, a server, or other suitable medium including at least one of the storage device 1002 and the auxiliary storage device 1003.

The communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called, for example, a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., to realize at least one of, for example, Frequency Division Duplex (FDD) and Time Division Duplex (TDD). For example, a transmitting/receiving antenna, an amplifier unit, a transmitting/receiving unit, a transmission line interface, etc. may be realized by the communication device 1004. The transmitting/receiving unit may be implemented as a transmitting unit and a receiving unit that are physically or logically separated.

The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one configuration (e.g., a touch panel).

In addition, each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

In addition, the base station device 10 and the user device 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by the hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

(Summary of the embodiment)
This embodiment provides a base station apparatus, a user apparatus, and a communication method described at least in the following sections.
(Section 1)
a transmitter that transmits a first wake-up signal, which is a wake-up signal that triggers monitoring of a paging occasion, for each group of user equipments that are grouped, and transmits a second wake-up signal, which is a wake-up signal common to the plurality of groups;
The transmission unit transmits, to a user equipment, information instructing whether or not to monitor the second activation signal, or information indirectly instructing whether or not to monitor the second activation signal.
(Section 2)
The base station apparatus according to claim 1, further comprising: a control unit that determines whether or not to cause a user equipment to monitor the second activation signal based on a number of groups of user equipment.
(Section 3)
a transmitter that transmits a first wake-up signal, which is a wake-up signal that triggers monitoring of a paging occasion, for each group of user equipments that are grouped, and transmits a second wake-up signal, which is a wake-up signal common to the plurality of groups;
The base station apparatus, wherein the transmitter transmits a third activation signal, which is an activation signal common to a plurality of groups, using a resource different from a resource for transmitting the second activation signal.
(Section 4)
The base station device according to claim 3, wherein the third activation signal is a legacy activation signal.
(Section 5)
A receiving unit that receives a group ID from a base station device;
a control unit that determines a resource for monitoring a first activation signal, which is an activation signal that triggers monitoring of a paging occasion, based on the group ID;
When a second activation signal, which is an activation signal common to a plurality of groups, is transmitted from the base station device, the receiving unit determines whether or not to monitor the second activation signal in the resources based on information received from the base station device.
(Section 6)
The user equipment according to claim 5, wherein the information received from the base station device is information instructing whether or not to monitor the second activation signal, or information indirectly instructing whether or not to monitor the second activation signal.
(Section 7)
a transmitting step of transmitting a first wake-up signal, which is a wake-up signal that triggers monitoring of a paging occasion, for each group of user equipments divided into groups, and transmitting a second wake-up signal, which is a wake-up signal common to the plurality of groups;
A communication method executed by a base station device, comprising: transmitting, before the transmitting step, information instructing a user device whether or not to monitor the second activation signal, or information indirectly instructing a user device whether or not to monitor the second activation signal.

Paragraphs 1 and 3 to 7 enable a user device to properly monitor a wake-up signal in a wireless communication network in which a wake-up signal that is applied to an individual group and a wake-up signal that is applied commonly to multiple groups are transmitted. Paragraph 2 also enables a user device to properly determine whether or not to monitor a second wake-up signal.

(Supplementary description of the embodiment)
Although the embodiment of the present invention has been described above, the disclosed invention is not limited to such an embodiment, and those skilled in the art will understand various modifications, modifications, alternatives, replacements, and the like. Although the description has been given using specific numerical examples to facilitate understanding of the invention, unless otherwise specified, those numerical values are merely examples and any appropriate value may be used. The division of items in the above description is not essential to the present invention, and matters described in two or more items may be used in combination as necessary, and matters described in one item may be applied to matters described in another item (as long as there is no contradiction). The boundaries of functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of physical parts. The operations of multiple functional units may be physically performed by one part, or the operations of one functional unit may be physically performed by multiple parts. The order of the processing procedures described in the embodiment may be changed as long as there is no contradiction. For convenience of processing description, the base station device 10 and the user device 20 have been described using functional block diagrams, but such devices may be realized by hardware, software, or a combination thereof. The software operated by the processor of the base station device 10 in accordance with an embodiment of the present invention and the software operated by the processor of the user device 20 in accordance with an embodiment of the present invention may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.

In addition, the notification of information is not limited to the aspects/embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or combinations thereof. In addition, the RRC signaling may be called an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.

Each aspect/embodiment described in this disclosure may be applied to at least one of systems utilizing LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), or other suitable systems, and next generation systems enhanced based on these. In addition, multiple systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A with 5G, etc.).

The processing steps, sequences, flow charts, etc. of each aspect/embodiment described herein may be reordered unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order and are not limited to the particular order presented.

In this specification, a specific operation performed by the base station device 10 may be performed by its upper node in some cases. In a network consisting of one or more network nodes having the base station device 10, it is clear that various operations performed for communication with the user equipment 20 may be performed by at least one of the base station device 10 and other network nodes other than the base station device 10 (e.g., MME or S-GW, etc., but are not limited to these). Although the above example shows a case where there is one other network node other than the base station device 10, the other network node may be a combination of multiple other network nodes (e.g., MME and S-GW).

The information or signals described in this disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). They may be input and output via multiple network nodes.

The input and output information, etc. may be stored in a specific location (e.g., memory) or may be managed using a management table. The input and output information, etc. may be overwritten, updated, or appended. The output information, etc. may be deleted. The input information, etc. may be transmitted to another device.

In the present disclosure, the determination may be made based on a value represented by one bit (0 or 1), a Boolean (true or false) value, or a comparison of numerical values (e.g., comparison with a predetermined value).

Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

Additionally, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, if the software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and/or wireless technologies (such as infrared, microwave), then these wired and/or wireless technologies are included within the definition of a transmission medium.

The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

Note that the terms described in this disclosure and the terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of the channel and the symbol may be a signal (signaling). Also, the signal may be a message. Also, a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.

As used in this disclosure, the terms "system" and "network" are used interchangeably.

In addition, the information, parameters, etc. described in this disclosure may be represented using absolute values, may be represented using relative values from a predetermined value, or may be represented using other corresponding information. For example, radio resources may be indicated by an index.

The names used for the above-mentioned parameters are not limiting in any respect. Moreover, the formulas etc. using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (e.g., PUSCH, PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not limiting in any respect.

In this disclosure, terms such as "base station (BS)", "radio base station", "base station device", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point", "transmission point", "reception point", "transmission/reception point", "cell", "sector", "cell group", "carrier", and "component carrier" may be used interchangeably. A base station may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head). The term "cell" or "sector" refers to a part or the entire coverage area of at least one of the base station and base station subsystems that provide communication services in this coverage.

In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably.

A mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a moving body, the moving body itself, etc. The moving body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned moving body (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may include a device that does not necessarily move during communication operation. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

In addition, the base station device in the present disclosure may be read as a user device. For example, each aspect/embodiment of the present disclosure may be applied to a configuration in which communication between a base station device and a user device is replaced with communication between multiple user devices 20 (which may be called, for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). In this case, the user device 20 may be configured to have the functions possessed by the above-mentioned base station device 10. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, the uplink channel, downlink channel, etc. may be read as a side channel.

Similarly, the user device in the present disclosure may be read as a base station device. In this case, the base station device may be configured to have the functions of the user device described above.

As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of actions. "Determining" and "determining" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching in a table, database, or other data structure), ascertaining, and the like. "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and the like. In addition, "judgment" and "decision" can include considering resolving, selecting, choosing, establishing, comparing, etc., to be a "judgment" or "decision." In other words, "judgment" and "decision" can include considering some action to be a "judgment" or "decision." Furthermore, "judgment (decision)" can be interpreted as "assuming," "expecting," "considering," etc.

The terms "connected" and "coupled", or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access". As used in this disclosure, two elements may be considered to be "connected" or "coupled" to each other using at least one of one or more wires, cables, and printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and light (both visible and invisible) range, as some non-limiting and non-exhaustive examples.

The reference signal may also be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.

As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

Any reference to elements using designations such as "first," "second," etc., used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must precede the second element in some way.

The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

When used in this disclosure, the terms "include," "including," and variations thereof are intended to be inclusive, similar to the term "comprising." Additionally, the term "or," as used in this disclosure, is not intended to be an exclusive or.

A radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

The numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel. The numerology may indicate, for example, at least one of the following: Subcarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), number of symbols per TTI, radio frame structure, a particular filtering operation performed by the transceiver in the frequency domain, a particular windowing operation performed by the transceiver in the time domain, etc.

A slot may consist of one or more symbols in the time domain (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol, a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.). A slot may be a time unit based on numerology.

A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.

Radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals. Radio frame, subframe, slot, minislot, and symbol may each be referred to by a different name.

For example, one subframe may be called a Transmission Time Interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. In other words, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.

Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station schedules each user device 20 by allocating radio resources (such as frequency bandwidth and transmission power that can be used by each user device 20) in TTI units. Note that the definition of TTI is not limited to this.

A TTI may be a transmission time unit for a channel-coded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) in which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

In addition, when one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit of scheduling. In addition, the number of slots (minislots) constituting the minimum time unit of scheduling may be controlled.

A TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a normal TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

Note that a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length exceeding 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length less than the TTI length of a long TTI and equal to or greater than 1 ms.

A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of the numerology, for example, 12. The number of subcarriers included in an RB may be determined based on the numerology.

In addition, the time domain of an RB may include one or more symbols and may be one slot, one minislot, one subframe, or one TTI in length. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

In addition, one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

A resource block may also be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

A Bandwidth Part (BWP), which may also be referred to as a partial bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by an index of the RB relative to a Common Reference Point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

The BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP). One or more BWPs may be configured for a UE within one carrier.

At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP. Note that the terms "cell", "carrier", etc. in this disclosure may be read as "BWP".

The above-mentioned structures of radio frames, subframes, slots, minislots, and symbols are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, as well as the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.

In this disclosure, where articles have been added by translation, such as a, an, and the in English, this disclosure may include that the nouns following these articles are in the plural form.

In this disclosure, the term "A and B are different" may mean "A and B are different from each other." In addition, the term may mean "A and B are each different from C." Terms such as "separate" and "combined" may also be interpreted in the same way as "different."

Each aspect/embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. In addition, notification of specific information (e.g., notification that "X is the case") is not limited to being done explicitly, but may be done implicitly (e.g., not notifying the specific information).

In this disclosure, an SS block or CSI-RS is an example of a synchronization signal or reference signal.

Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure.

10 Base station device 110 Transmitter 120 Receiver 130 Setting unit 140 Control unit 20 User device 210 Transmitter 220 Receiver 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device

Claims (5)

a control unit that sets setting information relating to group activation signals, which are activation signals to be transmitted to terminals as triggers for monitoring paging occasions, and which are grouped for each group of the terminals, and a common activation signal common to a plurality of the groups;
A transmission unit that transmits the configuration information to the terminal by RRC signaling;
having
The transmission unit is a base station that transmits the common activation signal to the terminal by using resources for transmitting the activation signal. The base station according to claim 1, wherein the transmitter transmits a legacy wake-up signal, which is the wake-up signal common to a plurality of the terminals, to the terminal as the common wake-up signal. a receiving unit that receives from a base station by RRC signaling configuration information regarding group activation signals grouped for each group of the terminals and a common activation signal common to a plurality of the groups, the group activation signals being activation signals to be transmitted to the terminals as triggers for monitoring paging occasions;
A control unit that performs settings related to the start-up signal based on the setting information;
having
The receiving unit receives the common activation signal from the base station using resources for transmitting the activation signal. a control unit that sets setting information relating to group activation signals, which are activation signals to be transmitted to terminals as triggers for monitoring paging occasions, and which are grouped for each group of the terminals, and a common activation signal common to a plurality of the groups;
A transmission unit that transmits the configuration information to the terminal by RRC signaling;
having
a base station configured to transmit the common activation signal to the terminal using a resource for transmitting the activation signal;
A receiving unit that receives the setting information from the base station by RRC signaling;
A control unit that performs settings related to the start-up signal based on the setting information;
having
the receiving unit includes a terminal that receives the common activation signal from the base station using a resource for transmitting the activation signal;
A communication system having the above configuration. a control step of setting configuration information relating to group activation signals, which are activation signals to be transmitted to terminals as triggers for monitoring paging occasions, and which are grouped for each group of the terminals, and a common activation signal common to a plurality of the groups;
A transmitting step of transmitting the configuration information to a terminal by RRC signaling;
having
A communication method of a base station, wherein the transmitting step transmits the common activation signal to the terminal using resources for transmitting the activation signal.

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